Permeable pavement has the potential to be an effective tool in managing stormwater runoff through retention of sediment and other contaminants associated with urban development. The infiltration capacity of permeable pavement declines as more sediment is captured, thereby reducing its ability to treat runoff. Regular restorative maintenance practices can alleviate this issue and prolong the useful life and benefits of the system. Maintenance practices used to restore the infiltration capacity of permeable pavement were evaluated on three surfaces: Permeable interlocking concrete pavers (PICP), pervious concrete (PC), and porous asphalt (PA). Each of the three test plots received a similar volume of runoff and sediment load from an adjacent, impervious asphalt parking lot. Six different maintenance practices were evaluated over a four-year period: Hand-held pressure washer and vacuum, leaf blower and push broom, vacuum-assisted street cleaner, manual disturbance of PICP aggregate, pressure washing and vacuuming, and compressed air and vacuuming. Of the six practices tested, five were completed on PICP, four on PC, and two on PA. Nearly all forms of maintenance resulted in increased average surface infiltration rates. Increases ranged from 94% to 1703% for PICP, 5% to 169% for PC, and 16% to 40% for PA. Disruption of the aggregate between the joints of PICP, whether by simple hand tools or sophisticated machinery, resulted in significant (p ≤ 0.05) gains in infiltration capacity. Sediment penetrated into the solid matrix of the PC and PA, making maintenance practices using a high-pressure wash followed by high-suction vacuum the most effective for these permeable pavement types. In all instances, when the same maintenance practice was done on multiple surfaces, PICP showed the greatest recovery in infiltration capacity.

中文翻译：

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透水路面渗透能力的修复性养护实践评估

透水路面有可能成为通过保留与城市发展相关的沉积物和其他污染物来管理雨水径流的有效工具。随着更多沉积物被捕获，透水路面的渗透能力下降，从而降低其处理径流的能力。定期的恢复性维护实践可以缓解这个问题并延长系统的使用寿命和好处。用于恢复透水路面渗透能力的维护实践在三个表面上进行了评估：透水互锁混凝土摊铺机 (PICP)、透水混凝土 (PC) 和多孔沥青 (PA)。三个测试地块中的每一个都从相邻的不透水沥青停车场接收了相似的径流和沉积物负荷。在四年的时间里评估了六种不同的维护实践：手持式高压清洗机和吸尘器、吹叶机和推扫帚、真空辅助街道清洁器、PICP骨料的人工扰动、压力清洗和吸尘、压缩空气和吸尘。在测试的六项实践中，五项在 PICP 上完成，四项在 PC 上完成，两项在 PA 上完成。几乎所有形式的维护都会增加平均表面渗透率。PICP 的增幅为 94% 至 1703%，PC 的增幅为 5% 至 169%，PA 的增幅为 16% 至 40%。无论是通过简单的手动工具还是复杂的机械，PICP 接头之间的聚集体的破坏都会导致渗透能力的显着提高（p ≤ 0.05）。沉积物渗透到 PC 和 PA 的固体基质中，使使用高压清洗和高吸力真空进行维护实践对于这些可渗透路面类型最有效。